Version 2.9 is available upstream. Please consider updating! It seems that version 2.9 is available upstream, while the latest version in the Gentoo tree is 2.7. You think this warning is false? Read more about it here.
Relax and Recover (Rear) is the leading Open Source disaster recovery solution, and successor to mkcdrec. It comprises of a modular framework and ready-to-go workflows for many common situations to produce a bootable image and restore from backup using this image. As a benefit, it allows to restore to different hardware and can therefore be used as a migration tool as well.